eucalyptus
/ˌju:kəˈlɪptəs; ˌjukə`lɪptəs/ n
(pl ~es or -lypti / -ˈlɪptaɪ; -`lɪptaɪ/)
1 (also euca`lyptus tree) any of several types of tall evergreen trees (including the Australian gum-tree), from which oil, timber and gum are obtained 桉树属.
2 (also euca`lyptus oil) [U]
oil obtained from its leaves, used as a treatment for colds 桉树油（用以治疗感冒）.